Question

Oblicz :

* 2-3x - x-1 = 0,3x - 1-2x

----- ---- ------ =

3 2 6

* [ x -(24-x)] = 1/5 x

------ - kreska ułamkowa :>

[ - nawias kwadratowy

1/5 ułamek

Answer 1

1. ..................... / * 6
2 * (2 - 3x) - 3 * (x - 1) = 6 * (0,3x ) - 1 * (1 - 2x)
4 - 6x - 3x + 3 = 1,8x - 1 + 2x
7 - 9x = 3,8x - 1
-9x - 3,8x = - 1 - 7
-12,8x = -8
x = -8 : (-12,8)
x = 80/128 = 20/32
x = 5/8

2.

[ x - (24 - x)] = 1/5x ----- / * 5
5 * [ x - 24 + x ] = x
5 * (2x - 24) = x
10x - 120 = x
10x - x = 120
9x = 120
x = 120/9
x = 40/3

x = 13 i 1/3